PLSS HELP ME The health of some organisms is helped by certain microorganisms when these microorganisms -
A. assist in the breakdown food and produce vitamins.
B. cause disease by releasing toxins and killing host cells.
C. infect the leaves and roots of trees in an ecosystem.
D. reduce available oxygen in aquatic ecosystems.

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

Describe two recent or ongoing space missions.

What are two examples of conduction that we use everyday